Article Per Year (5 Year)
p-Index From 2021 - 2026
11.134
P-Index
This Author published in this journals
All Journal Rotasi JURNAL SISTEM INFORMASI BISNIS Interaksi : Jurnal Ilmu Komunikasi Jurnal Rekayasa Mesin Jurnal Teknik Mesin Jurnal Pendidikan Teknik Mesin PAUD Teratai Teknobuga : Jurnal Teknologi Busana dan Boga Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Jurnal The Messenger BELIA: Early Childhood Education Papers Jurnal Profesi Medika: Jurnal Kedokteran dan Kesehatan Journal of Economic, Bussines and Accounting (COSTING) Jurnal Basicedu GEMA EKONOMI Jurnal Onoma: Pendidikan, Bahasa, dan Sastra Tax Literacy and Leadership Agility: Indigenous Peoples Awareness in Paying Taxes Jurnal Valuasi : Jurnal Ilmiah Ilmu Manajemen dan Kewirausahaan Journal of Mechanical and Electrical Technology Jurnal Basicedu Journal Research of Social Science, Economics, and Management Madani: Multidisciplinary Scientific Journal Diversity Logic Journal Multidisciplinary Jurnal Pengajaran Sekolah Dasar Journal Of Digital Communication Science Jurnal Ilmu Ekonomi, Pendidikan dan Teknik (IDENTIK) Jurnal Rekayasa Mesin Automotive Innovations Journal
Diah Wulandari
fikom unissula
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Physics Public Health Social Sciences Other

Published : 109 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 109 Documents
Search

 7   8   9   10   11 
Analisis Perbandingan Debit Air Pada Mesin Pompa Air Menggunakan Bahan Bakar Pertalite dan LPG Aidah, M. Fishal Askarul Faris; Sakti, Arya Mahendra; Wulandari, Diah; Ganda, Andita Nataria Fitri
Automotive Innovations Journal Vol. 1 No. 2 (2025): September
Publisher : Department of Automotive Engineering Technolgy

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Pertanian merupakan salah satu sektor utama dalam perekonomian Indonesia, dengan padi sebagai tanaman pangan utama. Modernisasi pertanian telah mendorong penggunaan mesin pompa air sebagai bagian integral dari kegiatan bercocok tanam, namun banyak mesin masih menggunakan bahan bakar minyak bumi (BBM) yang mahal dan tidak ramah lingkungan. Oleh karena itu, konversi ke bahan bakar gas (BBG), khususnya Liquid Petroleum Gas (LPG), menjadi alternatif yang menjanjikan. Penelitian ini bertujuan untuk menganalisis efisiensi mesin pompa air yang menggunakan LPG sebagai bahan bakar, serta melakukan analisis biaya bahan bakar dan laju aliran airnya. Ketersediaan mesin pompa dengan LPG masih terbatas, terutama di daerah terpelosok. Oleh karena itu, penelitian ini diharapkan dapat memberikan pemahaman yang lebih baik tentang penggunaan LPG dalam mesin pompa air irigasi. Pada penelitian ini hasilnya adalah Debit air yang dihasilkan pertalite ialah sebesar 4,4 liter/detik sedangkan LPG 3 kg menghasilkan sebesar 3,4 liter/detik. Dari hasil tersebut kita bisa bandingkan untuk laju debit air lebih besar menggunakan pertalite dari pada gas LPG 3 kg, Pompa air berbahan bakar pertalite dapat dilakukan modifikasi menjadi mesin pompa air berbahan bakar Gas/LPG dengan melakukan perubahan pada karburator konverter kit, Pompa air berbahan bakar pertalite dapat beroperasi sesuai waktu dan kebutuhan pengairan dan cepat dan Penggunaan mesin pompa air berbahan bakar pertalite dapat menunjang peningkatan beberapa aspek bidang seperti pertanian dengan kecepatan pada laju bebit.
Analisis Pengaruh Variasi Kulit Ari Dan Model Hopper Terhadap Waktu Produksi Serta Tingkat Kehalusan Hasil Penggilingan Hardinansya, Farid Aziz; Sakti, Arya Mahendra; Abdi, Ferly Isnomo; Wulandari, Diah
Jurnal Ilmu Ekonomi, Pendidikan dan Teknik Vol. 3 No. 1 (2026): IDENTIK - Januari
Publisher : CV. SINAR HOWUHOWU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70134/identik.v3i1.1267

Abstract

This research is motivated by the ineffectiveness of stone model grinding machine in processing light, fibrous, and thin grain husk, so that a disc mill type FFC-15 grinding machine based on friction mechanism between discs was developed. The main objective is to analyze the effect of variations in husk type (mung bean, soybean, peanut) and hopper model (cylindrical, pentagonal, pyramidal) on production time, actual grinding capacity, level of fineness of the grinded results, and the extent to which differences in the physical characteristics of the husk affect the material flow rate in various hopper models with a test mass of 1 kg and a 1 mm sieve to understand the mechanism of non-homogeneous material flow in the grinding system. The experimental method involves testing the combination of the three types of husk and hopper, repeated three times, measuring production time, capacity (kg/hour), and percentage passing through a 1 mm sieve. The results showed an actual capacity of 2.70–4.71 kg/hour, where the pyramid hopper excelled with the shortest time, a maximum capacity of 4.71 kg/hour, and a fineness of 94.40% for mung bean hulls, while soybean hulls were the lowest due to unstable flow. The pyramid hopper proved to be the most effective in improving the hull grinding performance of grains.      
Analisis Pengaruh Variasi Kecepatan Putaran  Dan Jarak Celah Mata Pisau Pada Mesin Pengupas Biji Kopi Terhadap Hasil Pengupasan Prayogo, Muhammad; Wulandari, Diah
Jurnal Ilmu Ekonomi, Pendidikan dan Teknik Vol. 3 No. 1 (2026): IDENTIK - Januari
Publisher : CV. SINAR HOWUHOWU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70134/identik.v3i1.1271

Abstract

This study aims to investigate the effect of machine rotational speed and blade clearance on the performance of a wet coffee cherry hulling machine. The performance parameters evaluated include the percentage of peeled coffee cherries, the percentage of unpeeled cherries, and machine capacity. Identifying the influence of these parameters is expected to determine the optimal operating conditions that enable an effective and efficient peeling process without causing damage to the coffee beans. A common problem encountered in the field is the suboptimal peeling of wet coffee cherries, indicated by a high proportion of unpeeled cherries or bean damage due to improper machine settings. In practice, farmers and coffee processors often rely on approximate adjustments of blade clearance and rotational speed, resulting in inconsistent peeling quality and limited machine capacity. An experimental method was employed by testing a wet coffee cherry hulling machine at rotational speeds of 300 rpm, 350 rpm, and 420 rpm, combined with blade clearances of 2 mm, 4 mm, and 6 mm. The results show that smaller blade clearances produce higher peeling percentages, while increasing rotational speed tends to improve machine capacity. The optimal operating condition was achieved at a rotational speed of 420 rpm with a blade clearance of 2 mm, yielding the highest peeling percentage and the greatest machine capacity.
Pengembangan Mesin Pengupas Biji Kopi Basah Skala Rumah Tangga Dengan Pemisahan Biji Terkupas Dan Tidak Terkupas Berdasarkan Ukuran Diameter Biji Kopi Affandi, Bagus Rizal; Wulandari, Diah
Jurnal Ilmu Ekonomi, Pendidikan dan Teknik Vol. 3 No. 1 (2026): IDENTIK - Januari
Publisher : CV. SINAR HOWUHOWU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70134/identik.v3i1.1278

Abstract

Wet coffee bean processing at the household-scale farmer level is still largely carried out manually, requiring considerable time and labor while producing non-uniform bean quality. The use of wet coffee bean hulling machines is expected to improve post-harvest processing efficiency; however, in practice, several problems are still encountered, particularly in the coffee bean separation system. This study aims to design, construct, and test the performance of a household-scale wet coffee bean hulling machine and to analyze the performance of the separation system between hulled and unhulled coffee beans.The research method used was Research and Development (R&D), which included the stages of design, fabrication, and performance testing. The machine was designed using a single-phase electric motor with a power rating of 1 HP, a pulley and V-belt transmission system, a friction-based hulling mechanism, and a perforated screen as the coffee bean separation medium. Performance testing was conducted using post-harvest wet coffee beans at a shaft rotational speed of 420 rpm. The observed parameters included the machine’s ability to perform the hulling process and the hulling process time.The test results show that the wet coffee bean hulling machine is capable of performing the hulling process at a shaft rotational speed of 420 rpm and operates stably during the testing process. The coffee bean separation system functions in accordance with the design principles and is able to support wet coffee bean processing at the household scale. Based on the test results and analysis, the developed wet coffee bean hulling machine can be used as a supporting tool for household-scale wet coffee processing and has the potential for further development to improve performance and the effectiveness of post-harvest coffee processing.                                            
Analisis Kekuatan Tarik Las Smaw Pada Pipa Carbon Steel A106 Grade B Mahendra, Genta Arya Rahma; Ibad, Muhamad Nahrudin; Wulandari, Diah
Jurnal Ilmu Ekonomi, Pendidikan dan Teknik Vol. 3 No. 1 (2026): IDENTIK - Januari
Publisher : CV. SINAR HOWUHOWU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70134/identik.v3i1.1280

Abstract

The purpose of this study is to analyze the welding strength, specifically the SMAW (Shielded Metal Arc Welding) method, on ASTM A106 grade B carbon steel pipes. These pipes are commonly used in the oil and gas industry, making it important to understand the mechanical properties that occur after the welding process. Tensile testing was conducted on specimens taken from welded pipe joints, using SMAW as the welding method parameter. The results of the test indicate that the welding method significantly influences tensile strength, elongation, and other mechanical properties. This study found that maximum strength is achieved at certain parameters, highlighting the importance of control in the welding process to ensure joint quality. In addition, microscopic analysis of the microstructure shows that the composition and phase characteristics of the weld affect joint strength. The findings of this research are expected to provide guidance for industry in improving welding quality and the durability of carbon steel pipe joints, as well as serve as a reference for further studies in developing more efficient and effective welding techniques.             
Analisis Pembuatan Filamen 3D Printing Berbahan Pati Kulit Singkong Dengan Polylactic Acid (PLA) Pada Mesin Ekstruder Ambarita, Gilbert Doni; Ganda, Andita Nataria Fitir; Wulandari, Diah; Puspitasari, Dewi
Madani: Jurnal Ilmiah Multidisiplin Vol 4, No 1 (2026): February 2026
Publisher : Penerbit Yayasan Daarul Huda Kruengmane

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.18330098

Abstract

PLA is a quite popular type of filament because this material is often used as a raw material for bioplastics which have the ability to decompose naturally. However, the price of PLA filament is also quite high, making it inaccessible to everyone, and there is a weakness in the characteristics of polylactic acid, namely its hydrophobic nature. Cassava peel starch as an alternative additive possesses a hydrophilic nature to cover the weakness of PLA's properties. However, an incorrect combination ratio of the two materials will worsen the structural strength of the PLA and cassava peel starch. The objective of this research is to analyze the tensile strength of polylactic acid material with cassava peel starch at ratios of (PLA) 60:40 (CPS), (PLA) 70:30 (CPS), and (PLA) 80:20 (CPS) on an extruder machine. This research uses a quantitative approach experimental method. The specimen preparation was carried out by first mixing the two materials according to the determined ratio, and then processing them in an extruder machine at a temperature of 160°C. The resulting specimens were tested following the ASTM D2256 standard. The research results show that the (PLA) 80:20 (CPS) ratio has the highest average tensile strength of 44.43 MPa with a tensile strain of 0,0241. Thus, the lower the starch ratio, the better the increase in the obtained tensile strength
The Effect of Government Support on the Purchase Intention of Electric Vehicles Wulandari, Diah; Sugianto, Albert; Rahputri, Rani; Kembaren, Julbintor; Permana , Iman
Journal Research of Social Science, Economics, and Management Vol. 5 No. 5 (2025): Journal Research of Social Science, Economics, and Management
Publisher : Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/jrssem.v5i5.1223

Abstract

This study examines the influence of psychological factors and government support on consumers' purchase intention toward electric vehicles (EVs) in the Greater Jakarta (Jabodetabek) area by employing an extended Theory of Planned Behavior (TPB) framework. The model investigates the effects of emotional value, attitude toward EVs, subjective norm, perceived behavioral control (PBC), and the moderating role of government support. A quantitative survey method was applied to 291 potential EV consumers aged 18 years and above residing in Jabodetabek. Data were collected through an online Likert-scale questionnaire and analyzed using Partial Least Squares Structural Equation Modeling (PLS-SEM) with SmartPLS 4. The findings indicate that emotional value has a significant positive effect on attitude toward EVs, and both attitude and subjective norm significantly enhance purchase intention. Attitude is also found to significantly mediate the relationship between emotional value and purchase intention. Conversely, PBC does not exhibit a significant effect on purchase intention. Moreover, government support does not moderate the relationships between attitude or subjective norm and purchase intention and only shows a weak, negative moderating effect on the relationship between PBC and purchase intention. Overall, the results suggest that EV purchase intention in Jabodetabek is driven more strongly by emotional and normative factors than by perceived behavioral control or perceived government support.
Rancang Bangun Alat Sentrifugal Semi-otomatis Kapasitas 1 kg Rochaman, Nur; Sakti, Arya Mahendra; Wulandari, Diah; Riandadari, Dyah
Jurnal Rekayasa Mesin Vol 10 No 03 (2025): JRM Desember 2025
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jrm.v10i03.73588

Abstract

This research aims to design and assemble a semi-automatic centrifuge with a capacity of 1 kg that functions to separate liquid and particles in soy milk by utilizing centrifugal force. The need for this tool arises because commercial centrifuges are expensive, have limited capacity, and are less suitable for learning activities in educational laboratories and small-scale industries. The research method applies a Research and Development (R&D) approach that includes literature review, component design, assembly, functional testing, and evaluation of results. This tool is made using a 0.5 HP AC motor equipped with a speed controller via a dimmer and a pulley and V-belt-based transmission system. Tests were carried out at three variations of engine speed (700, 900, and 1100 rpm) and operating duration (15, 20, and 25 minutes) using soy milk samples. The test results show that the tool can run stably and successfully separate liquid from soy milk particles, as indicated by the formation of separate clear and creamy liquid layers. This research provides a contribution in the form of a prototype centrifuge that is economical, has a larger capacity, and is easy to use, so it has the potential to be a practical tool in educational laboratories and technology that is suitable for small-scale industries.
Studi Finite Element Analysis terhadap Kekuatan Struktural Dua Desain Roda Kereta Menggunakan ANSYS Workbench 17.2 Davareza, Tinton; Ganda, Andita Nataria Fitri; Wulandari, Diah; Mubarok, Dio Dwi; Firmansyah, Ganda Putra
Jurnal Rekayasa Mesin Vol 10 No 03 (2025): JRM Desember 2025
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jrm.v10i03.73974

Abstract

Roda kereta merupakan komponen vital dalam sistem perkeretaapian yang harus mampu menahan beban operasi secara aman dengan deformasi dan konsentrasi tegangan yang terkendali. Penelitian ini bertujuan untuk mengevaluasi dan membandingkan performa struktural dua desain roda kereta melalui pendekatan Finite Element Analysis (FEA). Analisis dilakukan menggunakan ANSYS Workbench 17.2 dengan memodelkan kontak roda dengan rel menggunakan tipe kontak frictionless agar kondisi batas lebih merepresentasikan kondisi operasi nyata. Material yang digunakan adalah baja karbon ASTM A36 sebagai pendekatan baseline, dengan pembebanan vertikal sebesar 110.362,5 N yang merepresentasikan setengah beban gandar jalur rel kelas I. Parameter evaluasi meliputi tegangan ekuivalen Von Mises, total deformasi, dan safety factor. Hasil simulasi menunjukkan bahwa Model B memiliki performa struktural yang lebih baik dibandingkan Model A, ditunjukkan oleh tegangan maksimum yang lebih rendah (160,82 MPa dibandingkan 195,19 MPa), deformasi maksimum yang lebih kecil (0,029245 mm dibandingkan 0,045356 mm), serta nilai safety factor minimum yang lebih tinggi (1,3742 dibandingkan 1,1322). Perbedaan kinerja ini dipengaruhi oleh variasi geometri, khususnya pada web plate, radius transisi, dan distribusi massa roda. Penelitian ini memberikan kontribusi berupa pemahaman pengaruh geometri terhadap respons struktural roda kereta dan dapat digunakan sebagai dasar evaluasi awal desain roda kereta menggunakan pendekatan FEA.
PEMBUATAN CETAKAN SENDOK PUDING DENGAN INJECTION MOLDING DARI MATERIAL POLYLACTIC ACID (PLA) DAN PATI SINGKONG Al Fath Hasby Ash Shiddiqy, Yhun; Ganda, Andita Nataria Fitri; Wulandari, Diah; Arifianti, Lailatus Sa'diyah Yuniar
Jurnal Rekayasa Mesin Vol 10 No 03 (2025): JRM Desember 2025
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jrm.v10i03.74386

Abstract

Plastic is widely used in Indonesia, but its non-biodegradable nature causes accumulation and environmental pollution. As a solution, more eco-friendly bioplastics have been developed. This study aims to produce and analyze pudding spoon molds made from Polylactic Acid (PLA) and cassava starch using the injection molding method. The process began with product and mold design using Autodesk Fusion 360 with product dimensions of 125.5 × 25.2 × 2 mm and mold dimensions of 132 × 60 × 35.6 mm. Mold Flow simulation was conducted to analyze parameters such as fill confidence, visual defects, warpage, air traps, and deflection. The mold was manufactured using CNC machining with aluminum 5052 material. The PLA and cassava starch mixtures were varied, heated at a mold temperature of 160 °C and injection temperature of 190 °C, with a cooling time of approximately 5 minutes. The comparison between simulation and actual results showed dimensional differences for each material variation. The largest deviation occurred at a ratio of 40% PLA and 60% cassava starch, reaching 14.9%, while the best result was obtained at a ratio of 50% PLA and 50% cassava starch with only 0.72% deviation from the initial design. This study indicates that material composition significantly affects the dimensional quality of bioplastic products produced through the injection molding process.
Co-Authors ', Usman 'Ilmi, Muhammad Iklil Ulil Adam, Fian Adidya Adham Rifai, Hasif ADIYANTORO, ARI Affandi, Bagus Rizal Afghan, Fayyadh Buddy Al AFIF HIDAYAT, AHMAD Afifah, Hidayanti Nuzulatul Aidah, M. Fishal Askarul Faris Aji Nugroho Akbar, Mokhamad Rizky Al Djumariah, Dhea Al Fath Hasby Ash Shiddiqy, Yhun Alam, Ilham Rofiqul Alfadilla, Muhammad Fajar ALFIANTO, RENDI Amalia, Sefi Ambarita, Gilbert Doni AMNA, MUSTAFID Anatri Desstya Andrian Andrian Ariana Setiani Arifianti, Lailatus Sa'diyah Yuniar Arruafy, Mohammad Ghithrof Arya Mahendra Sakti Atiqoh, Nisrina Bayu Kurniawan Bin Laday, La Dedy Augustino Cahyo Nugroho, Cahyo Chinsa, Iqbal Rifky Davareza, Tinton Dewanti Handayani, Sri Sularti Dewi Puspitasari Dyah Riandadari Eka, Yuliasti Eko Marsyahyo Eko Saputra, Aditiya Wahyu Fachry Abda El Rahman FARADILLA FIRDAUSY, MEUTIA Farizi, Aziizun Faiq Al Fatahillah, Idham Rizki Yusma Febrianto, Andrie Seva Ferly Isnomo Abdi Fikri, Zainur Rijalul Firdaus, Oktavian Bachtiar Firiski, Edwi Febrian Firman Yasa Utama Firman Yasa Utama Firmansyah, Ganda Putra Firmansyah, Rian Ganda, Andita Ganda, Andita Nataria Fitir Ganda, Andita Nataria Fitri Gegatama, Muhammad Henwa Genta Arya Rahma Mahendra, Genta Hanifah, Nasywa Hardinansya, Farid Aziz Hartuti Purnaweni Hermawan, Dedy Andy Hudaya, Adam Aryadana Ibad, Muhamad Nahrudin Irfa’i, Mochamad Arif IRFAN MAULANA, MUHAMMAD Irwandy Syofyan Kembaren, Julbintor Kusuma, Muhammad Dewantara Kusuma, Rachmad Andrian Jaya Mahendra, Genta Arya Rahma Manggalasari, Lena Citra MARTINO, SANDI Marzad, Deftana Aqsya Mubarok, Dio Dwi Mubin, Moh. Nurul Muhammad Riza Hafizi Mujakki, Muhammad Akbar Murti, Dafa Aditya Naqsyabandi, Ananda Rafly Naufal, Bayu Ahmad Nosuvian, Joko Laksono Novi Resmini Nugraha, Muhammad Erlangga Adi Nur, Muhammad Baihaqi Nurhadi, Jatmika Octaura, Mega Raisya Octavianissa, Icha Nur Pata Ledi, Simon Aten Permana , Iman Prasetiyo, Prembayun Prasetyo, Rafly Budi Pratama, ceisaleo Pandu PRATIYAS, FANDI Prayogo, Muhammad Putri, Annisa Rizqika Hermalia Putri, Danisha Yoananda Rachma Hasibuan Rachmanda, Reza Irfani Rachmattan, Ryan Rahman, Riandito Auki Minanda Rahputri, Rani Rakhman, Abdullah Ramadhan, Aldhi Fahrezy Ramadhan, Rafli Rizki Ramadhani A, Gilang Ridho, Mukhlis Yazid Rochaman, Nur ROHMADANININGSIH, LINDA ROUDHOTUL HARIRIN, SITI Rozi, Ahmat Fahrul Rusli, Ghozy Meiky Ryandadari, Dyah Safitri , Novi Angga Saputra, Prihatama Wahyu Sayuti, Muhammad Noor Sedjati, Moch. Ari Wibowo Shadiq, Muhammad Difa Ash Sofi, Nurul Ainu Sri Endah Wahyuningsih SRI RAHAYU Sudana, Undang Sugianto, Albert Sulistyorini, Elisa Suryonegoro, Satrio Adi Sutriyono Titik Djumiarti Toni Prahasto Trimanah, Trimanah Trimariyono, Dimas Ubaidillah, Moch. Rizal Vincencius Gunawan, Vincencius WARJU Widiyanti, Prastiwi Wahyu Widoretno, Yustin Setiya Widyastuti, Yani Winoto, Roy Ariel Wulandari, Cyndhi Kartika Yuda, Mohammad Wira Yulianto, Angki Narda Zainal Abidin